CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 21h - MCA - Programmable Option Select configuration byte 2
                                                                                

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 21h - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. - First Hard Disk user defined: Landing Zone, Low Byte
                                                                                

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 21h - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. WinBIOS - First Hard Disk user defined: Landing Zone, High Byte
                                                                                

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 21h - AMSTRAD - MOUSE X SCALING FACTOR
Note:	default: 0Ah
                                                                                

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 21h - PHOENIX - First user defined hard disk (type 48) Cylinders MSB
                                                                                

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 21h - AWARD - 2nd Hard Disk user defined (type 48): Write Precomp Low Byte
                                                                                

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 21h - Quadtel HT 12 BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware.  The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - first user def. drive: landing zone low byte